CHARACTERISTICS AND THERMOCHEMICAL REACTION MECHANISM OF MANGANESE-IRON-LITHIUM COMPOSITE METAL OXIDE SUITABLE FOR SOLAR THERMAL POWER GENERATION

Xiao Gang; Peng Jikang; Yuan Peng; Xiang Duo; Ni Mingjiang

doi:10.19912/j.0254-0096.tynxb.2021-0047

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Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (11) : 119-124. DOI: 10.19912/j.0254-0096.tynxb.2021-0047

CHARACTERISTICS AND THERMOCHEMICAL REACTION MECHANISM OF MANGANESE-IRON-LITHIUM COMPOSITE METAL OXIDE SUITABLE FOR SOLAR THERMAL POWER GENERATION

Xiao Gang, Peng Jikang, Yuan Peng, Xiang Duo, Ni Mingjiang

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Abstract

The iron and lithium oxideswere added to the manganese-based oxide to reduce the reaction temperature for thermochemical energy storage, facilitating development of the new generation technologyof solar thermal power. Comparingwith Mn₂O₃, the initial reduction temperature ofthe new composite, Li₂FeMn₃O₈, decreased from 773℃ to 622 ℃ experimentally, withthe activation energy from 797.10 kJ/mol to 132.44 kJ/mol. The oxidation temperature decreased to 590 ℃, whilethe oxidation reaction heat increased up to 209.40 kJ/kg. The new composite showed an excellent reaction stability after 105 experimental cycles.

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thermochemistry / metal oxide / reaction kinetics / thermal storage temperature / manganese-iron-lithium

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Xiao Gang, Peng Jikang, Yuan Peng, Xiang Duo, Ni Mingjiang. CHARACTERISTICS AND THERMOCHEMICAL REACTION MECHANISM OF MANGANESE-IRON-LITHIUM COMPOSITE METAL OXIDE SUITABLE FOR SOLAR THERMAL POWER GENERATION[J]. Acta Energiae Solaris Sinica. 2022, 43(11): 119-124 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0047

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